Generation and analysis of constitutively active and physically destabilized mutants of the human beta(1)-adrenoceptor.

Abstract excerpt

Constitutive activity of wild-type and mutant forms of human beta(1)- and beta(2)-adrenoceptors was measured by guanosine 5'-O-(3-[(35)S]thio)triphosphate ([(35)S]GTPgammaS) binding assays using fusion proteins between these receptors and G(s)alpha. Constitutive activity of the beta(1)-adrenoceptor is enhanced by mutation of Leu(322). The ability of ligands to suppress receptor instability and produce...

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